Water-filter.



No. 830,277. v Y PATENTED SEPT. 4,.1906.

W. AKIN. WATER FILTER.

APPLICATION TILED FEB. 9, 1906.

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marked A.

WILLIAM AKIN, OF LOS ANGELES, CALIFORNIA.

WATER-FILTER.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed February 9, 1906. Serial No. 301,280.

To all whom it may concern.-

Be it known that I, WILLIAM AKIN, of the city of Los Angeles, in thecounty of Los Angeles and State of California, have invented certainImprovements in Connection with ater-Filters, of which the following isa full, clear, and exact description or specification, reference beinghad to the annexed drawings and to the letters marked thereon.

This invention has reference to that class of filters which are usedupon the dischargemouths of water-taps or, as they are sometimes called,faucets.

Upon the annexed drawings, Figure 1 is a vertical section of a filterand its coupling constructed according to my present improvements. Fig.2 is an elevation of the same corresponding to Fig. 1. Fig. 3 is anelevation of the filter-casing detached from the coupling, showing theoutwardly-flaring flange, also shown in section in Fig. 1. Fig. 4 is anelevation of the coupling and the flange and ring within which is theelastic ring against which the outwardly-flaring flange on the upper endof the filter-casing presses when the filter-casing and the coup lingare screwed together as shown in Figs. 1 and 2. Fig. 5 is a section ofthe coupling detached from the filter. Fig. 6 is a transverse section,on an enlarged scale, of the perforated casing at the lower part of thefilter casing, as also shown on a smaller scale in Fig. 1. Fig. 7 is aplan corresponding to Figs. 1, 2, and 3.

In Figs. 1 and 2 the casing of the filter is terial of a non-corrodiblecharacter or may be formed of steel, brass, or other material platedwith nickel or any metal which resists corrosion.

As will be seen from Figs. 1, 2, and 3, the upper part of this casing isformed with a screw-thread, by which it is connected and screwed ontothe exterior lower part of the coupling B, which has a correspondingscrewthread formed externally upon the lower part of itself. The flaringflange C of the upper part of the filter-casing A when screwed tightupon the coupling B presses upward and hard against the elasticpacking-ring D and causes the packing-ring D to be compressed within theannular recess E, formed upon the lower part of the coupling B by theflange C and the ring C, so that when the filter-casing A is screwedupward upon the lower screwed portion of the coupling B the It is formedof any suitable nia-- flaring flange C compresses the elastic ring Dinto the annular recess E, which always contains the elastic packing Dunder any pressure to which it is or may be subjected. By thisarrangement a perfectly water-tight connection is formed by means of theflaring flange C of the filter-easing, the flange C, the ring C and theannular recess E of the coupling B, and the elastic ring D, these partsbeing tightly held in union by the filter-casing and. holder beingscrewed together in the manner hereinbefore set forth.

While the filter-casing A is readily remov able by unscrewing it fromthe coupling B, the india-rubber or other elastic lining G, placedwithin the coupling B, is firmly held in its place so as to be incapableof being forced outward by the pressure of water flowing through thefilter because of the upper part of the coupling B being turned slightlyover as an inwar(fly-contracting rojection, and the coupling B is heldin its p ace upon the nose of a tap or faucet by a cement of shellacdissolved in alcohol. The lower part of the filter-casing is constructedof an upper perforated dome-shaped plate H and of a lowerinverted-dome-shaped plate I, the two pieces being connected together bya flange J on the lower portion being turned upward over and pressedupon an annular projection on the upper part, as shown at Fig. 6. Thelower part of the filtercasing A, as shown at Fig. 1, is composed of oneor more layers of compressed wool K, which rests immediately upon theupper perforated dome H, above which a piece of sponge L is inserted.This piece of sponge becomes compressed Within the filter-casing bymeans of the inwardlyprojecting flange M at the lower part of theconnecting-piece B when the filter is screwed upon the coupling B.

I claim The combination consisting of the filtercasing, thefilter-coupling, the lower part of the filter-coupling beingscrew-threaded externa-lly, the annular recess having its mouth openingdownward at the upper end of the screw-thread of the coupling, theannular elastic packing-ring within the annular recess, thefilter-casing having its upper part screwthreaded to be screwed upwardon the lower part of the coupling, the flaring end of the screwed upperpart of the filter-casing pressed by the tightening action of the screwon the coupling and filter-casing respectively, against the elasticpacking-ring in the ICS my hand and seal in the presence of tWosubscribing witnesses.

WILLIAM AKIN. 1i 5.

annular recess of the coupling, the inwardlyturned flange at the upperend of the coupling for confining the elastic ring therein whichprovides for the filter being connected 5 With the mouths of Water-tapsby shellac cel Vitnesses:

ment, substantially as hereinbefore described. ST. JOHN DAY,

In testimony whereof I have hereunto set 1 J l D. CORY.

